actube/src/cw/mdata.h

69 lines
1.3 KiB
C
Raw Normal View History

#ifndef __MDATA_H
#define __MDATA_H
#include <stdint.h>
union mdata_ElemData {
void *raw;
uint8_t byte;
uint16_t word;
uint32_t dword;
uint64_t qword;
};
struct mdata_Elem{
const char * key;
const struct mdata_Type * type;
union mdata_ElemData data;
};
struct mdata_Type{
/** A human readable name for this type */
const char *name;
/** A pointer to a function to delete elements of this type */
void (*del)(void*);
/** A method to put this object to a buffer */
int (*put)(struct mdata_Elem *i,uint8_t*dst);
/** The get emthod */
struct mdata_Elem * (*get)(const uint8_t*src, int len);
/** A pointer to a function to convert elements of this type to a string.
This function is mainly used to store elements to an SQL database
or to json strings */
int (*to_str)(const struct mdata_Elem * e,char *dst);
/** Cereate an item of this type from a string, which was previously
created by the #del function. */
struct mdata_Elem * (*from_str)(const char *src);
/*
int (*def)(void *, void *);
*/
};
#define MDATA_TYPE_INIT()\
{\
_I_NAME,\
_I_DEL,\
_I_PUT,\
_I_GET,\
_I_TO_STR,\
_I_FROM_STR \
}
struct mdata_Elem *mdata_elem_new( const struct mdata_Type * type );
#endif /* __MDATA_H */